Pump drive



NOV. 1.5, 1949 J D, sPALDNG 2,488,069

- PUM1 a DRIVE Filed Aug. l, 1944 nama Nev. s, v1949 1 wwe John D.spadml,

Los Angeles, Calii., asinoto The National Supply Company. Pittsbui'gl,Pa., a'corporation of Pennsylvania Application Anni-t 1944, se-n No.541,603 a emm. (c. oz-ol This invention relates to pump drives andmoreparticularly to the provision of a drive means for a pair of pumpsin which there is incorporated a two-speed drive for one of the pumps.

mud. Another object of this invention is to provide a drive mechanismfor the pumps of a rotary drilling rig wherein there is employed' aplurality of driving engines operably connected through transmissionmeans to the respective pumps and in which transmission there isprovidedpneumatically operated friction clutches so arranged as to permit directdrive of the respective pumps from their associated engines and alsopermit a low speed drive to one of the pumps for the maintenance of ahigh pressure circulation of drilling mud from such pump.

Other objects and advantages of this invention it is believed will beapparentl from the following detailed description of a preferredembodiment thereof as illustrated in the accompanying drawing.

The single figure is atop diagrammatic view of the pump drive embodyingmy invention.

in the preferred embodiment of my invention as illustrated in thisdrawing, i and 2 indicate pumps of the type well known in this art forthe eirculation of mud fluid" as utilized in the rotary process ofdrilling wells.

In the driving mechanism illustrated there are indicated three enginesat 3, li and which are internal combustion engines preferably of theDiesel type. .A transmission means is interposed between the engines 3,and 5 and the pumps i and 2 which will permit any one of the threeengines to be utilized to drive either of the pumps I or 2 and which, ifdesired, will permit compounding of the engines so that more than oneengine may be used to drive more than one pump where desired.

As indicated, the engines 3, 4 and 5 are supported upon longitudinallyextending frame members 6 and 'I and each pair of such frame membersextends forwardly from their respective engines and are connected totransverse frame members 8 and 9. Each of the engines 3,

i, and 5 is' provided with the customary service clutch 43, ll and forconnecting the engine with its power take-off shaft respectively.

A drive shaft l0 of the engine 5 is co'upled by means of an elongatedcoupling il with the 'drive hub l2 of the friction clutch M. Journaledupon the drive shaft l2' is a sprocket l3 and this sprocket is adaptedto be releasably coupled with the shaft i2a through the medium of thepneumatically operated friction clutch indicated at M. Carried by theshaft i2l so as to be driven thereby is a V-belt pulley iS which isallgned with driven V-belt pulley it of the pump i so that said pulleyiS is driven through' the V-belts i'i connecting the' pulleys l5 and i6.

The engine i has its drive shaft i8 connected through the medium-of acoupling l9 with a countershaft 20. Journaled on the countershaft 20 area pair of independent sprockets 2i and 22 which are adapted to bereleasably clutched to the shaft 20 through the medium of 1 jaw clutchesdiagrammaticaliy illustrated at 23 and 24. The shaft 20 extendsoutwardly and is coupled by means of a coupling 25 with a pump drivingclutch 30. The clutch 30 is mounted on the shaft 3l which carries a pumpdriving pulley 21 in alignment with the driven pulley 28 Vof the pump 2.A multiple V-belt transmission element 29 connects the pulleys 21 and28. The pneumatically operated friction clutch 30 is employed forreleasably coupling the shaft 20 with a shaft 3I to which the pulley 21is secured.

Secured to the shaft 20 is a low speed' pump drive sprocket 32 which isin alignment with a driven clutch sprocket 33 of a pneumaticallyoperated friction clutch 34. A multiple chain transmission 35 connectsthe sprockets 32 and 33. The friction clutch 34 releasably couples thesprockets 33 to the shaft i2'.

The pneumaticaly operated friction clutches it and 34 may be of anysuitable type or construction and are similar in construction to thefriction clutches illustrated in the copending application of Forrest J.Young hereinabove referred to.

In the case of the pneumatic friction clutch M the hub l2 is formed asan extension of the clutch housing so that thel clutch housing isdirectly driven from the engine 5 together with the sprocket i3 and theshaft i2* to which the pulley l5 is secured is adapted to be coupledwith the rotating housing of the clutch upon actuation of the clutchplates to close the clutch.

36, it and Ili,

driven sprocket 33 of the clutch 34 is then.

being driven so that when the pneumatic clutch reverse transmission 42utilized ordinarily for the driving of other units of the consolidatedrig.

The clutches I4, 30, 34 and 39 are preferably of the vpneumatic frictiontype. Each of the clutches I 4, 34 and 39 includes an outer housingcured tiireety to the drive shaft in of the engine and rotateditherewith, as does its sprocket I3. The countershaft I2a is not drivenuntil the of the clutch 34 and the clutch spider carried by the shaftI2a are actuated to close the clutch.

It will be apparent from the foregoing that the engine 3 may be utilizedfor' driving either to, thus driving the sprocket 2. with the outeh 23engaged the shaft 20 is, driven, and by engaging the clutch 30, theV-belt drive to the lpump 2 is rendered effective so that this 4 I ofthe consolidated rig as fully described in the aforementioned co-.`pending application of Forrest J. Young.

Having fully described my invention, it is 5 to be understood that I donot wish'to be limited' to the details herein set forth, but myinvention is of the full scope of the appended claims.

I claim: 4

par of engines for driving the pumps, a first driving the same, secondpump drive shaft,

second pump is driven from the second engine,

whereby the first pump will be driven at a reduced speed from the firstengine.

- 2. In a drilling rig, a pair of pumps, an engine including afirst pumpdrive shaft mounted in shaft and the drive shaft of the first engineinsprocket, clutch means for releasably clutchviding for a reduced speedof the first pump from 3. In a pump drive mechanism the combination oftwo mud pumps, a pair of engines one for driving each of said pumps,transmission connections whereby either of said engines may be at areduced speed.

tioned in axial alignment with the drive shaft of countershaft, meansfor driving the first pump countershaft, the clutch means between thefirst engine drive shaft anc` the first countershaft includlng atransmission element for coupling the fii'st engine drive shaft with thesecond countershaft, a transmission element mounted on the secondcountershaft in alignment with the said clutch transmission elementwhereby the second countershaft is driven from the first engine, a

transmission element mounted on the second countershaft' for driving thefirst countershaft from the second countershaft, a transmission elementmounted on the i'lrst countershaft in align- 6. In a two speed pumpdrive assembly including a pair of engines, a pump, a drive element forment with the latter said transmission element mounted on the secondcountershaft, transmission means connecting the latter said transmissionelements, whereby the first pump may be driven from the first engine ata reduced speed.

5. In a two speed pump drive assembly including a pair of engines, apump, a drive element for driving the pump, said drive element beingrotatlvely mounted co-axially of the drive shaft of one of said engines,transmission means to opvqratively connect said engines for conjointoperation to drive the pump,iselective means including -saidtransmission means for driving sad pump drive element at one speed, andmeans including a second transmission means for driving said pump driveelement at a second speed.

driving the pump, said drive element being rotatively mounted co-axiallyof the drive shaft of REFERENCES CITED The following references are ofrecord in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,990,810 Young Feb. 12, 19352,071,778 Walne Feb. 23, 1937 2,282,597 Archer May 12, 1942

